v2.1.0+geth.v0.6.0

This release is for upgrading kroma to v2.1.0 and kroma-geth to v0.6.0. The corresponding release of kroma and kroma-geth can be found as follows.

• kroma
• kroma-geth

What's Changed

• feat: upgrade Kroma Sepolia to v2.1.0 by @kangsorang in #54

Full Changelog: v2.0.0+geth.v0.5.4...v2.1.0+geth.v0.6.0